Software Status

2 – InfiniPath Cluster Administration Configuring ssh and sshd Using shosts.equiv

If there is output, you should look at the output from this command to determine if it is configured:

$ /sbin/ifconfig -a

Finally, if you need to find which InfiniPath and OpenFabrics modules are running, try the following command:

$ lsmod egrep ’ipath_ib_rdma_findex’

2.8

InfiniBand status can be checked by running the program ipath_control. Here is sample usage and output:

$ ipath_control -i

$Id: QLogic Release2.0 $ $Date: 2006-09-15-04:16 $

00:Version: Driver 2.0, InfiniPath_QHT7140, InfiniPath1 3.2, PCI 2, SW Compat 2

00:Status: 0xe1 Initted Present IB_link_up IB_configured

00:LID=0x30 MLID=0x0 GUID=00:11:75:00:00:07:11:97 Serial: 1236070407

Another useful program is ibstatus. Sample usage and output is as follows:

$ ibstatus

Infiniband device ’ipath0’ port 1 status:

default gid:	fe80:0000:0000:0000:0011:7500:0005:602f
base lid:	0x35
sm lid:	0x2
state:	4: ACTIVE
phys state:	5: LinkUp
rate:	10 Gb/sec (4X)

For more information on these programs, See appendix C.9.9 and appendix C.9.5.

2.9

Configuring ssh and sshd Using shosts.equiv

Running MPI programs on an InfiniPath cluster depends, by default, on secure shell ssh to launch node programs on the nodes. Jobs must be able to start up without the need for interactive password entry on every node. Here we see how the cluster administrator can lift this burden from the user through the use of the shosts.equiv mechanism. This method is recommended, provided that your cluster is behind a firewall and accessible only to trusted users.

Later, in section 3.5.1, we show how an individual user can accomplish this end through the use of ssh-agent.

IB6054601-00 D

2-15

IB6054601-00 D specifications

The Q-Logic IB6054601-00 D is a high-performance InfiniBand adapter card designed for data centers and enterprise applications requiring robust connectivity and low-latency communication. This adapter is part of QLogic's extensive portfolio of networking solutions, catering to the needs of high-performance computing (HPC), cloud computing, and virtualization environments.

One of the standout features of the IB6054601-00 D is its capability to support data transfer rates of up to 56 Gbps. This makes it ideal for applications demanding large bandwidth and quick data processing. The adapter is optimized for RDMA (Remote Direct Memory Access) technology, which allows data to be transferred directly between the memory of different computers without involving the CPU. This reduces latency and CPU overhead, leading to enhanced overall system performance.

The architecture of the IB6054601-00 D includes support for a dual-port design, which offers increased bandwidth, redundancy, and fault tolerance. This dual-port configuration is especially advantageous for environments that require high availability and reliability, such as financial services and mission-critical applications.

The adapter utilizes advanced error detection and correction mechanisms, ensuring that data integrity is maintained during transmission. With features like adaptive routing and congestion management, the IB6054601-00 D is capable of optimizing the handling of data flows, thereby enhancing performance even under heavy loads.

In terms of compatibility, the Q-Logic IB6054601-00 D supports a wide range of operating systems and virtualization technologies, making it easy to integrate into diverse IT environments. It also includes drivers and software packages that facilitate seamless deployment and management.

In addition to high-speed connectivity, the adapter is designed with power efficiency in mind. It adheres to Energy Star regulations, helping organizations lower their operational costs while minimizing their environmental footprint.

Overall, the Q-Logic IB6054601-00 D stands out for its high throughput, low latency, and reliability. Its combination of advanced features and technologies positions it as an excellent choice for organizations looking to enhance their data center performance and maximize the efficiency of their network infrastructure. With the growing demands for faster and more efficient data transfer, solutions like the IB6054601-00 D are essential in meeting the evolving needs of modern enterprises.

Q-Logic IB6054601-00 D manual Software Status, Configuring ssh and sshd Using shosts.equiv

Models: IB6054601-00 D